The accident took place on the Nokha-Sujangarh state highway in the early hours.
Seven, including a pregnant woman and two other women, died while over a dozen injured were undergoing treatment at Bikaner's PBM Hospital, SHO Nokha Manoj Sharma said.
He said the deceased were identified as jeep driver Manglaram (65), Sovti (17), Danaram (42), Mukesh (12), Sugni (55), Sitaram (25) and Sushila (20).
The jeep was overloaded, he added.
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The bus was on the way to Sujangarh from Nokha, he added.
Bodies were handed over to family members after post- mortem.
Union minister Arjunram Meghwal expressed grief on tragic incident. Bikaner IG, B K Pandey and district president Sushila Sinwar met the injured undergoing treatment and wished for their speedy recovery.